Impression mechanism for addressing machines



APPLICATION FILED OCT-29, I920.

Patented July 18, 1922.

2 SHEETSSHEET I.

TI.A%3,189.

III/m C. CHISHOLM.

IMPRESSION MECHANISM FOR ADDRESSING MACHlNES.

/\PPL|CAT|ON FILED 0CT.29, 1920- 1,423,189. Patented July 18,1922.

2 SHEETS-SHEET 2.

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CLIFTON CHISI-IOLM, OF- GLEVELAND,-OHIO, AS$IG-NOR TO THE AMERICAN MULTI- GRAPH COMYPANY, F CLEVELAND, OHIO, A CORPORATION OF OHIO.

IMrnEssron MECHANISM non Annnnssme MACHINES.

Specification of Letters Patent.

Patented July 18, 1322.

Application filed October 29, 1920. Serial No. 420,415.

T 0 aZZ whom it may concern.

Be it known that I, CLIrroN-Cn si-roLM, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Impression Mechanism for Addressing Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

\ This invention relates to impression mechanism co-operative with address plates and paper to print as the plates and paper are mutually presented in an address printing machine. I

One of the objects of the invention is to provide impression members or platens, which will operate efficiently with various sizes and forms of paper, printing the ad dress without danger of smudging the surrounding regions of the paper.

Another feature is the provision for convenient and accurate adjustability of one of the platens, with reference to the other, to vary the force of impression.

The drawings illustrate the impressing mechanism in an approved form, the details of which are also included within my invention. I p I In the drawings Fig. l is a sectional elevation of the impression members and adjacent parts of an addressing machine; Fig. 2 is a cross section on the line 2-2 of Fig. 1,

looking toward the right; Fig. 3 is a perspective, of one of the platens arranged to act also as a paper feeding roller; Fig. 4 1s adetail showing in plan the mechanism for effecting the pressure adjustment.

As shown in Fig. 1 indicates a suitable bed plate, 11 a vertical plate or standard ris-.

ing therefrom. Journaled in this plate and a corresponding member, not shown, is a shaft 12 on which is mounted the upper platen or paper feed drum 14. Below the shaft 12 is a revoluble shaft 15 mounted in the frame plates and carrying eccentrically a cylindrical sleeve 20,, loose on the shaft. Surrounding this sleeve is the pressure platen,

shown as composed of a cylindrical core -22 and a rubber surface 24. I On'the shaft "15 are a pair of sprocket wheels 30, whichca'rry conveyer chains 31, having at intervals projections 32. 1

. The rotation of the shaft'15 will advance the conveyer chains to feed plates between invention the prising elastic the two roller platens. The two shafts l5 and 12 rotate in timed relation, so that a certain portion or portions of the drum 14 comes successively into coaction with the plates brought into position by the conveyor chains. T 1e impression platen 24, however, rotates freely, and thus accommodates itself to any change in the relation between the paper drum and conveyer chain movements.

'My prior application No." 371,722, filed April 6, 1920, illustrates a change speed gearing wherein a paper feeding drum may make either a half or a whole rotation for such travel of the conveyer chain as brings an address plate into action, so that either two ordinary envelopes or one large envelope or sheet of paper may be fed for each rotation of the paper feeding drum. In the present paper feed drum has two diametrically opposed platen surfaces and is particularly well adapted for such change speed operation.

As shown particularly in Fig. 3, the paper platen comprises, beside the main drum member 1.4, a pair of rings or flanges40 secured to the sides thereof adjacent to the periphery, arcua-te yielding strips 42secured to the drum body adjacent to the rings (preferably by vulcanization) and yielding segmental members 41 removably mounted between these rings and between the end of the strips. These segmental members are shown as cominner and outer portions between which is themetallic plate 44 to which the'elastio members, preferably of rubber, are secured as by vulcanization. The inner elastic'meinber 43 and the plate 42 preferablyp'roject beyond the outer member to provide a ledge at the edge. Suitable set screws 45 screw into'the' drum body with their heads overlapping such ledge, as shown. in

Figs. 1 and 3. By this means, the segmental memberis retained in place but may bereadily replaced when worn.

platen members co -operate with a pair of rollers bearing against them. to enable sheetsof paper or envelopes, which spanthe strips to be readily fedabout the druminto printing position. Maintenance oft-he paper against the strips is assured by an arcuate shield 52'having openings '53 through which the rollers project, and an arcuate shield strip intermediate of the rollers and strips and lying close to the paper. The

. rollers 50 have their shafts slidably mounted in the frame plates, the rollers being pressed towrd the drum by springs 55, which thrust against blocks 56 bearing on the shafts. The springs are adjusted by set screws 57 mounted in cap plates 58.

The described construction enables the sheet or envelopes to be fed with the drum to printing position. It only one impression is made for each rotation of the drum let, one of the segmental blocks n is idle. It however, an each rotation, each of the blocks acts as a platen, co-operating with the loose roller 24..

It is desirable to have in machines of this kind automatic means for throwing the mechanism out oi operation in case paper is absent, and a convenient method is to have a light roller bear on the paper as it moves about the drum, such roller moving into a recess when the paper is absent, and thereby through suitable mechanism causing the operation of the throwout. A satisfactory throw-out mechanism so initiated is shown in detail and claimed in my application No. 425, 17 6 filed November 20, 1920. It is very convenient to provide the peripheral recesses for such throw-out roller by recessing the side of the rings 40 opposite the ends of the segment members. Such recessing is shown in Figs. 2 and 3 at 18. While this recess is in the nature of a rabbet the elastic member co-operates with the side wall of the ring to make the recess a groove, as clearly appears in Fig. 2. 7

To adjust the platen accurately, from a convenient location, to enable the proper impression, I. provide mechanism shown in Figs. 1 and 4;. Thus the sleeve 20 which is impression is to be made twice for.

roller, of a coacting roller drum having on its surface a plurality, of arcuate platen members, arcuate strips on the drum between said platen members, and feeding rollers bearing on the strips.

2. The combination with an impression roller, of a drum having a pair of: edge rings and a pair of separated removable yielding arcuate platen members between the rings, the periphery of the rings being of less ra dius than the platen members. i

3. The combination with an impression roller, of a drum having a pair of edge rings and a pair of separated arcuate yielding strips between and adjacent to the rings, and rollers pressed against the strips.

4;. In a machine of the character described, a drum having edge rings projecting beyond the body of the drum, and a plurality' of removable platen members resting on the body of the drum between the edge rings, and'securing devices carried by the body of the drum for locking the platen members in place, arcuate strips on the body eccentrically mounted on the shaft 15, has secured to it anarm 60, which is connected by a link 61 with a roclr arm 62 secured to a shaft 63. On this shaft is an operating rock arm 6 1. This arm has a projected end 65, in which is threaded a set screw 66. This set screw co-operates with a notched segment 68, which may be a plate secured to the bearing (59 for the shaft. By this arrangement the set screw holds the platen axis in desired position, but by loosening the set screw the arm 64: may be raised or lowered to turn the eccentric sleeve 20, and thereby adjust the platen impression.

It will be seen that the movement of the arm ea from one notch to the next is a very, small angular amount and the platen is accordingly adjustable by very fine incre described my invention, 1

of the drum between the platen members, and. rollers coacting with said strips.

5. In a machine of the character described, a drum having edge rings projecting beyond the body of the drum, and a plurality of platen members resting on the bodyof the drumbetween the edge rings, and securing devices carried by the body of the drum and overlapping ledges on the platen members. 6. In a machine ofthe character described, a drum having a body portion with. projecting edges, an elastic platen member mounted on the body between the edges, said platen member having two elastic portions with an intermediate non-elastic portion, said non-elastic portion projecting at the edge, and locking devices carried by the drum and engaging said projecting portions.

'7. The combination of a'drum" having a body and two edge rings, of a plurality of platen vmembers mounted on the body be- 20 tween the edge members, arcuate strips on the body between the edge members, rollers bearing against the arcuate strips, and f a shield lying close to the edge members and having openings through which the rollers project. i

'9. The combination ofa drum having a pair of edge flanges, an arcuateplaten between the flanges,

arcuate strips between the flanges, rollers bearing against the strips,

and a shield between the rollers and adapted to lie close to a sheet of paper bridging the strips.

10. The combination of a drum having a pair of peripheral yielding strips, rollers bearing against the strips, and a shield between the rollers and adapted to lie close to a sheet of paper bridging the strips, and another shield opposite the strips and having openings through which the rollers project.

11. The combination of a drum having edge flanges and peripheral strips between the flanges, an areuate shield substantially concentric of the drum about the strips,

shafts extending parallel with the drum axis, separated rollers on said shafts ex tending through openingsin the shield into engagement with the'strips, said shafts lying behind said shield. i

12. A paper feeding drum having a body portion, a pair of edge flanges and arcuate platen members between the edge flanges,

signature.

CLIFTON GHIS HOLM. 

